Improvement in supplying oil to street-lamps



: UNITED STATES PATENT QFFIGE.

RICHARD V. DE GUINON, OF JERSEY CITY, NEW JERSEY.

IMPROVEMENT IN SUPPLVING OIL TO STREET-LAMPS.

Specification forming part of Letters Patent No. 140,815, dated July 15, 1873 application filed June 12, 1873.

To all whom it may concern:

Be it known that I, RICHARD V. DE GUI- NON, of Jersey City, Hudson county and State of New Jersey, have invented certain Improvements in Supplying Carbon-Oil at the Point of Combustion in Street-Lamps, and for similar purposes, of which the following is a specification:

My invention consists and relates to the supply of hydrocarbon-oil at the point of coinbustion by means and in the manner hereafter set forth.

Several devices have been made to keep up a uniform supply at the combustion'points on the gravity principle, or law thereof. Such devices are unsightly and inconvenient, the impurities in the carbon-oil descending to the very small opening at the point of combus tion, completely stopping up the orifice, thus putting out the light at once and causing a great deal of trouble to remove the same. This difficulty I have entirely overcome. An-

other important point in the present device:

I can use and place out of sight, free from all dirt and impurities, any amount of oil from one to fifty gallons, and deliver the same at the point of combustion at a uniform pressure and perfectly free from any foreign matter.

The reservoir containing the hydrocarbonoil, as in the case of street-lamps, is placed beneath the sidewalk and beside the lamppost. Two or more lamps and posts may be connected with the same reservoir. Thus a whole park or building may be lighted from the one source.

The accompanying drawings fully illustrate my invention.

Figure 1 is a vertical elevation of the lamppost and carbon-oil tank or reservoir in posi- The lamp and post are of ordinary construc tion and set in the usual way. An excavation is made beside the lamp-post of sufficient size to admit a box containing the reservoir. B is a suitable flagstone having an aperture of sufficient size to admit the hand to open and close the cock F. The said aperture is closed by a cast-iron cover and fastened by a secure device to prevent persons from tampering with the same. The supply-tube G for the burner descends to the bottom of the reservoir, or-nearly so, leaving sufficient space for any impurities to settle on the bottom, which impurities may be removed from time to time by a pump introduced through the opening occupied by the cock F.

- The reservoir B may be constructed of any material that Will resist a pressure of four atmospheres. I prefer those made of cast-iron and of a capacity of about nine gallons.

Having thus constructed and arranged my invention, it is only remaining, to set the same in operation, to place in the reservoir, through the cock F, five gallons of carbon-oil; then connect an air-pump to the said cock F and compress the. air in the said reservoir so that it will indicate a pressure of twenty to thirty pounds to the square inch; close the cock and detach the air-pum p, and place a plug in the end of the cock F for greater security against an yleakagc or escape of the compressed air. This amount of pressure will deliver in a steady and uniform manner the whole amount of oil in the reservoir at the point of combustionthat is to say, in the event of no leakage.

I am aware that a patent was granted to Francis M. Randell, of Greenburg, New York, on the 10th day of January, 1871, for a device for supplying oil to lamps by the action of compressed air, the pressure being produced by t'orcing oil into a tight reservoir. This, thereair-pump. I thus avoid the loss of the aircushion, which must occur sooner or later, by leakage of air, if oil only be forced into the reservoir.

Having thus described my invention, What I claim, and desire to secure by Letters Patent, is-

lhe combination, with a street-lamp post of common form, of the separate subterranean reservoir B, the supply-pipe 0 extending from the burner E down through the lamp-post nearly to the bottom of the reservoir, and the 

